private void transmitFrame()
{
var td = new transmitDescriptor(machine.SystemBus);
td.Fetch(transmitDescriptorBase | transmitDescriptorOffset);
if (!td.Enable)
{
return; //if decriptor is disabled there is nothing to send (just return)
}
var packetBytes = machine.SystemBus.ReadBytes(td.PacketAddress, (int)td.Length);
if (!Misc.TryCreateFrameOrLogWarning(this, packetBytes, out var packet, addCrc: true))
{
return;
}
this.Log(LogLevel.Info, "Sending packet length {0}", packet.Bytes.Length);
this.Log(LogLevel.Info, "Packet address = 0x{0:X}", td.PacketAddress);
FrameReady?.Invoke(packet);
registers.Status |= 1u << 3;
if (td.Wrap)
{
transmitDescriptorOffset = 0;
}
else
{
if (transmitDescriptorOffset != 0x3f8)
{
transmitDescriptorOffset += 8;
}
else
{
transmitDescriptorOffset = 0;
}
}
if (td.InterruptEnable && ((registers.Control & (1u << 2)) != 0))
{
//if interrupts enabled
registers.Status |= 1u << 3; //transmitter interrupt bit
this.IRQ.Set();
this.IRQ.Unset();
}
td.Enable = false;
td.Wrap = false;
td.InterruptEnable = false;
td.Length = 0;
td.UnderrunError = false;
td.AttemptLimitError = false;
td.WriteBack();
}
private void transmitFrame()
{
var td = new transmitDescriptor(machine.SystemBus);
td.Fetch(transmitDescriptorBase | transmitDescriptorOffset);
if (!td.Enable)
{
return; //if decriptor is disabled there is nothing to send (just return)
}
var packetBytes = machine.SystemBus.ReadBytes((long)td.PacketAddress, (int)td.Length);
var packet = EthernetFrame.CreateEthernetFrameWithCRC(packetBytes);
if (Link.IsConnected)
{
this.Log(LogLevel.Info, "Sending packet length {0}", packet.Bytes.Length);
this.Log(LogLevel.Info, "Packet address = 0x{0:X}", td.PacketAddress);
Link.TransmitFrameFromInterface(packet);
}
registers.Status |= 1u << 3;
if (td.Wrap)
{
transmitDescriptorOffset = 0;
}
else
{
if (transmitDescriptorOffset != 0x3f8)
{
transmitDescriptorOffset += 8;
}
else
{
transmitDescriptorOffset = 0;
}
}
if (td.InterruptEnable && ((registers.Control & (1u << 2)) != 0))
{
//if interrupts enabled
registers.Status |= 1u << 3; //transmitter interrupt bit
this.IRQ.Set();
this.IRQ.Unset();
}
td.Enable = false;
td.Wrap = false;
td.InterruptEnable = false;
td.Length = 0;
td.UnderrunError = false;
td.AttemptLimitError = false;
td.WriteBack();
}
private void transmitFrame()
{
var td = new transmitDescriptor(machine.SystemBus);
td.Fetch(transmitDescriptorBase | transmitDescriptorOffset);
if(!td.Enable)
{
return; //if decriptor is disabled there is nothing to send (just return)
}
var packet = new EthernetFrame(machine.SystemBus.ReadBytes((long)td.PacketAddress, (int)td.Length));
if(Link.IsConnected)
{
this.Log(LogLevel.Info, "Sending packet length {0}", packet.Length);
this.Log(LogLevel.Info, "Packet address = 0x{0:X}", td.PacketAddress);
Link.TransmitFrameFromInterface(packet);
}
registers.Status |= 1u << 3;
if(td.Wrap)
{
transmitDescriptorOffset = 0;
}
else
{
if(transmitDescriptorOffset != 0x3f8)
{
transmitDescriptorOffset += 8;
}
else
{
transmitDescriptorOffset = 0;
}
}
if(td.InterruptEnable && ((registers.Control & (1u << 2)) != 0))
{
//if interrupts enabled
registers.Status |= 1u << 3; //transmitter interrupt bit
this.IRQ.Set();
this.IRQ.Unset();
}
td.Enable = false;
td.Wrap = false;
td.InterruptEnable = false;
td.Length = 0;
td.UnderrunError = false;
td.AttemptLimitError = false;
td.WriteBack();
}
